Parameters

If start is non-negative, the returned string
will start at the start'th position in
string, counting from zero. For instance,
in the string 'abcdef', the character at
position 0 is 'a', the
character at position 2 is
'c', and so forth.

If start is negative, the returned string
will start at the start'th character
from the end of string.

length

Maximum number of characters to use from str. If
omitted or NULL is passed, extract all characters to
the end of the string.

encoding

The encoding
parameter is the character encoding. If it is omitted, the internal character
encoding value will be used.

Return Values

mb_substr() returns the portion of
str specified by the
start and
length parameters.

Changelog

Version

Description

5.4.8

Passing NULL as length
extracts all characters to the end of the string. Prior to this version
NULL was treated the same as 0.